console.log(new Blob(['foo']));
// Blob {size: 3, type: ""}

console.log(new Blob(['{"a": "b"}'], { type: 'application/json' }));
// Blob {size: 10, type: "application/json"}

console.log(new Blob(['<p>Foo</p>','<p>Bar</p>'], { type: 'text/html' }));
// Blob {size: 20, type: "text/html"}
